228332940 has 96 divisors (see below), whose sum is σ = 700164864. Its totient is φ = 55138560.

The previous prime is 228332927. The next prime is 228332963. The reversal of 228332940 is 49233822.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228522 + ... + 229518.

It is an arithmetic number, because the mean of its divisors is an integer number (7293384).

Almost surely, 2^228332940 is an apocalyptic number.

228332940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228332940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350082432).

228332940 is an abundant number, since it is smaller than the sum of its proper divisors (471831924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228332940 is a wasteful number, since it uses less digits than its factorization.

228332940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1365 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 228332940 is about 15110.6895937942. The cubic root of 228332940 is about 611.2086936427.

The spelling of 228332940 in words is "two hundred twenty-eight million, three hundred thirty-two thousand, nine hundred forty".